Railway tank car



Sept. 6, 1932. F. A. ISAACSON RAILWAY TANK CAR Filed Feb. 9; 1931 I5 Sheets-Sheet S .1.- NYE/V702 6% 4.600e-50)? HTTZENEY F. A. ISAAC SON RAILWAY TANK CAR Filed Feb. 9, 1951 3 Sheets-Sheet Z N v/v 70E Era 4150mm jy flrzgis Patented Sept. 6, 1932 OFFICE g FRED A. ISAACSON, or CHICAGO, rumors RAILWAY TANK 7 CAR Application filed February 9, 1931. serial n6. 514,351.

My invention relates to railway rollin stock and consists in a novel underframe anc tank end construction for tank cars, locomotive tenders, or similar vehicles.

In the co-pending application of E. G. Hallquist, Serial N 0. 490,526, a tank car underframe construction is disclosed in which a broad arcuate web forming the main longitudinal member of the underframe also -1 forms the lower quadrant of the tank, the upper portion of the tank being comprised of plates secured to the. underframe web. No longitudinal sills are provided, as the combination underframe and tank bottom is rigid enough to support the vertical loads and withstand pulling and bulfing'stresses received by center and side sills in ordinary types of construction. The web is shownas formed integrall with bolsters, draft sills,

and various brac ets.

The main object of the present invention is to simplify and strengthen tank car structure by forming the tank ends integrally with the underframe. Another object is to provide a tank with an arcuate bottom which is of constant radius notwithstanding the fact that it slopesso asto drain properly. I also desire to provide suitable supports for heater pipes within the tank for heating material being transported to permit it tov be drawn off through the outlet valve more readily.

These and other detail objects which will appear in the following description are attained in the structure illustrated in the accompanying drawings in which Figure 1 is a top view of the underframe. and tank ends embodying my invention and also shows'the piping arrangement.

Figure 2 is in part a side view of the same structure and in part a vertical section on the longitudinal center line.

Figure 3 is an end view of the same.

Figures 4, 5, 6, 7, 8,9, and are vertical transverse sections taken substantially on the corresponding section lines of Figure 1.

Figure 11 is a vertical longitudinal section through an inlet or outlet connection to the heater pipes.

Figure 12 is a transverse section through a portion of the web showing corrugations therein.

The underframe comprises chiefly bolsters 6, draft sills 13 and an arcuate-web bottom member 1 extending between the bolsters and reinforced by internal webs or ribs2, 3-,and 4 perforated to permit the passage of heater pipes and to permit the flow of liquid from th ends of the tank to the center outlet valve 5a mounted. in a centrally located flat' bo'ss 5. At each end, the arcuate Web merges with the inner walls of the bolsters 6 which are of box section and rest upon the trucks (not shown) through the usual center plates 6a. The bolsters project outwardly from the tank bottom memberand are provided with side bearing plates 7 and jacking pads '8 (Figure 9). z a

For the purpose of decreasing the time, and expense required for patterns in forming a cast underframe, the curved portions of the web are formed with the same radius throughout their length. In order to provide a satisfactory support for the superstructure plates, the side portions of the web are described about a horizontal axiscoinciding with the axis of the cylindrical tank and are provided with pads 10 for mounting the superstructure 11. -In order to provide. drainage from the ends of the web to the outlet valve 5, the intermediate portions of the 'web are described about axes which areinclined from the horizontal, sloping downwardly from the bolsters to the'rniddle of the underframe. This construction results in the formation of a shoulder 80, of varying depth connecting the web sides and intermediate portions. l

RibsQ, 3, and 4: extend transversely of the Web and reinforce the shoulder portions thereof and these portions are further reinforced by integral ribs 9 projecting out wardly from the web and serving as supports for the brackets 31 for the running boards 23.

Tank and members 12 of domeshape are formed integrally with the underframe and extend upwardly therefrom at points spaced outwardly from the bolsters. The tank sheetsll abut these members andfithe joint and into theconcave portion of the underis made tight by welding or other suitable means as at W.

A transom member 14 parallels the outside wall of each bolster and the top plates of the bolsters and these transoms are imperforate and form portions of the bottom of the tank. Draft sills 13 project outwardly from these transom members and a box shaped member 15 adjacent to one draft sill at one end of the underframe is adapted to mount hand brake supports 36. Brackets 16 depend from the outer end member 15 and a hand brake bell crank; 29 is pivoted between'them.

The vertical webs of the draft sills 13 extend in the form of ribs through the bolster frame where they merge with the tank bottom, asin 17 (Figures 1 and 2). These ribs 17 serve to transmit pulling and bufling forces to the arcuate web 1. Other ribs 1.7a and 17 b reinforce the upright end members Depressions'lS are formed in the web 1 to provide for the wheels 19.

Various brackets may be formedintegrally with the underframe where needed'and I show brake cylinder 'bracket 20, brake pull rod supports 21, and brake lever support lugs 22as depending below the arcuate web. A running board 23 extends around the tank and rests upon brackets 9 extending outwardly from the sides of the underframe and V framework of metallic straps of suitable size and shape are secured to each end of the structure and support the running board at the ends of the car.

-The pipe 24 is inclined and, extends back and forth and upwardly along oneside of the car, reaching its highest point at bracket 26 projecting upwardly from one end of the bolster oppositethe starting nozzle; It then extends in a substantially horizontal line to the other end of the bolster and then re- -.turns to the outlet nozzles in downwardly inclined loops 27. The pipe passes through openings 28 in the transverse ribs 2, 3, and 4 and the higher branches of the loops are support-edon top of these ribs, as at'32, 32a,

.1- and 33 (Figures 5 and. or on brackets 26,

(Figure 9). 1

Obviously, the structure described may be varied as to many of its details without departing from the spirit of the invention, and

-' I contemplate the exclusive use of all. such modifications or variations as come within the scope of my claims,

I claim:

1. In a railway vehicle underframe, a

bolster, a tank end member integral with said bolster, and a hand brake supportbracket integral with said bolster and member.

2. In a railway vehicle underframe, spaced bolsters and an arcuate web of constant radius extending between said bolsters and adapted to form a tank bottom, the intermediate portion of said web sloping downwardly'towards an outlet opening.

In a railway vehicle underframe, spaced bolsters and an arcuate web of constant .2. radius extending between said bolsters, the

intermediate portions ofsaid web sloping arcuate web adapted to form the bottom of'a tank, said web having an outer portion of constant radii taken on centers along a sub- I stantially horizontal axis, and having an innor portion of constant radii taken on centers at varying vertical distances from said axis. 5. In a railway vehicle, an underframe, a tank superstructure, and an arcuate web forming-a tankbottom and also the main longitudinal member of the underframe, said web having an outer portion mounting said superstructure, the joint between said outer portion and the tank superstructure being substantially horizontal, and said web having aninner portion sloping toward an outlet opening.

6. In a railway vehicle underframe, an arcuate web adapted to form a tank bottom and running board bracket supports integral therewith in the form of ribs extending transversely of said web and reinforcing the same. 7

7 In a railway vehicle underframe, an arcuate web adapted to form a tank bottom and having a longitudinally extending offset portion, and running board bracket supports integral with said web and bracing said offset portion.

8. In. a railway vehicle underframe, an arcuate web adapted to form a tank bottom and having a longitudinally extending offset portion, and transverse ribs extending across and reinforcing said oifset portion.

9. In a railway vehicle underframe, an arcuate web adapted to form a tank bottom and having an upper portion for mounting superstructure plates and a lower portion of constant radius forming asloping bottom for said web, there being an ofiset between said portions, and running board. bracket supports integral with said web and bracing said offset.

10. In a railway vehicle underframe, an

downwardly towards an outlet opening and I the side portions of said 'web' being horizontal arcuate Web adapted to form a tank bottom and integral ribs on the concave side thereof having perforations therein at varying dis tances above said web, and flanges adjacent said perforations for supporting heating pipes extending therethroughQ 11. In a railway vehicle underframe, an arcuate web adapted to form a tank bottom, and means integral with said web forming heating pipe supports located at varying distances above said web.

12. In' a railway vehicle underframe, spaced bolsters, a main longitudinal member adapted to form a tank bottom, and transverse ribs extending across the concave part of said member, said ribs bracing said memher, and means on said ribs for supporting heating pipes extending along said underframe and at varying distances above said member. a

13. In a railway vehicle underframe, an arcuate Web adapted to form a tank bottom, upright ribs on the concave side of said web, and brackets above said ribs adapted to support heating pipes above said web. v

1 1. In a railway vehicle underframe, a bolster, and a tank end member of spherical contour above said bolster with its lower portion extending horizontally and merging with said bolster.

15. In a railway vehicle underframe, bolsters, and an arcuate web forming the main longitudinal member between said bolsters and sloping throughout its length, there being a flat boss on the lower face of said Web at its lower most point for mounting an outlet valve.

16. A railway vehicle underframe including a web having an arcuate transversecross section, said web sloping downwardly in a longitudinal direction towards an outlet opening.

17 In a railway vehicle underframe, an

arcuate web adapted to form a tank bottom and transverse ribs on the concave side thereof having perforations for supporting piping extending along said underframe.

In testimony whereof I hereunto affix my signature this fourth day of February, 1931.

FRED A. ISAACSON. 

